Wetting agents useful for alkaline mercerizing solution



Patented May 10, 1938 UNITED STATES WETTING AGENTS USEFUL FOR ALKALINE MERCERIZING SOLUTION Ferdinand Miinz, Frankfort-on-the-Main, Germany, assignor to General Aniline Works, Inc., New York, N. Y-., a corporation of Delaware N Drawing. Application March 31, 1936, Serial No. 71,875. In Germany April 11, 1935 4 Claims.

My invention relates to wetting agents useful for alkaline mercerizing solutions, more particularly those corresponding to the general formula:

R1 MeOzS-N wherein R1 and R2 stand for alkyl groups, the

total number of carbon atoms in both said groups being at least 3 and no more than 8 carbon atoms and Me means an alkali metal.

Insofar as they are suificiently soluble in alkaline mercerizing solutions, they may be used as wetting agents either alone or in admixture with substances which are less soluble per se, but the solubility and effect of which is increased by the simultaneous presence of the above sulfaminic acids. above formula are not sufficiently soluble in strong alkaline solutions, they may be dissolved therein by the addition of the well known dispersing agents.

The present sulfaminic acids are obtainable by acting with the usual agents, such as sulfur trioxide, chlorosulfonic acid, amidosulfonic acid and the like, on secondary amines of the formula:

R1 and R2 having the above signification.

Compared with sulfaminic acids of primary amines and fatty acid amides, described in the literature (cf. German Patent No. 572,283) which are characterized by the presence of alkyl groups containing more than 8 carbon atoms in their molecule, the present sulfaminic acids are superior as to their wetting effect for alkaline mercerizing solutions. Compared with the corresponding amides of the dithiocarbonic acid (of. U. S. Patent No. 2,043,329) the present sulfaminic acids have the advantage of being insensibletowards metallic salts and the contact with metals, particularly copper.

In order to illustrate my invention the follow Example 1 To a mercerizing solution of B. 0,3% of Insofar as the sulfaminic acids of the the sodium salt of the di-n.propyi-sulfaminic acid of the formula:

CHz-CHr-OH:

NaOsS-N car-cu out are added. Raw cotton is nearly immediately wetted.

By adding organic solvents, bases, naphthenic or aliphatic acids and other substances insoluble per se in mercerizing solutions the wetting and shrinking effect can be increased.

Example 2 15 parts of the sodium salt of the di-isobutylsulfaminic acid of the formula:

om-cn CHI I onr-on OHr-OH OHl I claim:

1. A composition of matter comprising an alkaline mercerizing bath containing a compound of the general formula:

- /Ri MeOsSN I R: wherein R1 and R2 represent alkyl groups the total number of carbon atoms in the two alkyl groups ranging from 3 to 8 and Me means an alkali metal.

2. A composition of matter comprising an alkaline mercerizing bath containing a. compound of the general formula: MeO3SN(R1) 2,

5 kaline mercerizing bath. containing a, compound of the general formula:

amour-om MeOnS-N wherein Me means an alkali metal.-

4. A composition of matter comprising an e1= kallne mercerizing bath containing a compound or the general formula:

wherein Me means-an alkali metal. v

- FERDINAND MflNz. 

